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Brass Knuckles Laws in Missouri

The rules on brass knuckles in Missouri: who may own and carry them, where they are banned, and the penalties, from the state code.

Short answer: It is a crime in Missouri to knowingly possess, make, transport, repair or sell knuckles (brass or metal knuckles: finger rings or guards of a hard substance designed to inflict serious injury or death by striking with the fist). RSMo §§571.010(13), 571.020.1(5), 571.020.3; 558.011.1(6); 558.002.1(2)

Brass knucklesIt is a crime in Missouri to knowingly possess, make, transport, repair or sell knuckles (brass or metal knuckles: finger rings or guards of a hard substance designed to inflict serious injury or death by striking with the fist). This is a class A misdemeanor, punishable by up to one year in jail and a fine of up to $2,000. Exceptions cover official military or police duty, lawful business dealings with those agencies, museum displays and dramatic performances.
Source: RSMo §§571.010(13), 571.020.1(5), 571.020.3; 558.011.1(6); 558.002.1(2)

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FAQ

Are brass knuckles illegal in Missouri?
It is a crime in Missouri to knowingly possess, make, transport, repair or sell knuckles (brass or metal knuckles: finger rings or guards of a hard substance designed to inflict serious injury or death by striking with the fist). This is a class A misdemeanor, punishable by up to one year in jail and a fine of up to $2,000. Exceptions cover official military or police duty, lawful business dealings with those agencies, museum displays and dramatic performances.

Last verified against official sources: October 27, 2026.

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General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.